BW9910 datasheet(4/14 Pages) BWTECH

Part #	BW9910

Description	High Brightness LED Driver

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Manufacturer	BWTECH [Bruckewell Technology LTD]

Direct Link	http://www.bruckewell-semi.com

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BW9910/A High Brightness LED Driver

4

www.bruckewell-semi.com/

Electrical Characteristics

(Over recommended operating conditions unless otherwise specified. TA +25°C)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Condition

15

500

BW9910

Input DC supply voltage range

VINDC

20

500

V

BW9910A

DC input voltage

0.5

1.0

BW9910

Shut down mode supply

current

IINSD

0.65

1.20

mA

BW9910A

Pin PWM_D to GND,

VIN VINDC(MIN)

(Note 3)

7.0

7.5

8.0

BW9910

Internally regulated voltage

VDD

9.5

10.0

11.0

V

BW9910A

VIN VINDC(MIN) ~ 500V

(Note 3), lDD(EXT) 0, GATE

pin open

BW9910

VDD current available for

external circuitry

(Note 4)

IDD(EXT)

1.0

mA

BW9910A

VIN VINDC(MIN) ~ 100V

(Note 3)

6.4

6.7

7.0

BW9910

VDD under voltage lockout

threshold

VUVLO

8.4

9.0

9.6

V

BW9910A

VDD rising

500

BW9910

VDD under voltage lockout

hysteresis

∆VUVLO

650

mV

BW9910A

VDD falling

PWM_D pull-down resistance

RPWM_D

150

200

250

kΩ

VPWM_D 5V

Current sensing pull in

threshold voltage

VCS

225

250

275

mV

Full ambient temperature range

(Note 5)

GATE high output voltage

VGATE(HI) VDD - 0.3

VDD

V

IOUT 10mA

GATE low output voltage

VGATE(LO)

0

0.3

V

IOUT -10mA

fOSC1

20

26

32

ROSC 1MΩ

Oscillator frequency

fOSC2

80

100

120

kHz

ROSC 226kΩ

Maximum oscillator PWM duty

cycle

DMAX(HF)

100

%

fPWM(HF) 25kHz, at GATE, CS tie to

GND.

Linear dimming pin voltage

range

VLD

0

250

mV

Full ambient temperature range

(Note 5), VIN 20V

Current sensing blanking

interval

tBLANK

160

250

440

ns

VCS 0.5V

Delay from CS trip to GATE

low

tDELAY

300

ns

VIN 20V, VLD 0.15V, VCS 0V ~

0.22V after tBLANK

GATE output rise time

tRISE

30

50

ns

CGATE 500pF

GATE output fall time

tFALL

30

50

ns

CGATE 500pF

Thermal shut down

TSD

150

°C

Thermal shut down hysteresis

∆TSD

50

°C

Note :

3. VINDC(MIN) for the BW9910 is 15V and for the BW9910A it is 20V.

4. Also limited by package power dissipation limit, whichever is lower.

5. Full ambient temperature range for BW9910 MST and BW9910A MST is -40 to +85°C; for BW9910 MPT and BW9910A MPT is -

40 to +105°C.

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